Taper pin



March 15, 1932. H, BACHMANN 1849:7 28

'TAFER PIN Filed Nov. 22. 1930 //7ue/7 for UNITED STATES PATENT OFFICE v HEINRICH BAOHMANN, OI lLAG-DEBUBG, GERIANY PAPER PIN Application filed November 22,1939, Serial No. 497,514, and in Germany April}, 1930.

This invention relates to a taper pin with axial bore and longitudinal slot for locally fixing two machine parts with cylindrical bores. In the conical pin hitherto known, serving for connecting two parts, the bores into which the pins are driven must first be Fig. 2 shows in a similar view to that of Fig. 1 a taper pin with a central bore and a lon 'tudinal groove.

. ig. 3 shows the fitting of such a pin in two parts with cylindrical bores.

The pin according to Fig. 1 consists of a conical tube 1 provided with a longitudinal slot 2. On the narrowerend of the in the slot extends into a groove 3 gradually cmin shallower. The section of the thinner on need not be lar er than the diameter of the bore of the ho e, in which the pin is to be inserted as the pin' at the point where the groove is situated, does not tend to spring outwards, but inwards, when being driven into the bore.

' The pin need not however consist of a tube,

but may be made of solid material 10;, which is bored longitudinally almost its entire length. A pin of this type, which in other the pin according to Fig. 1 or 2 is driven. As the pin is hollow and is tapered its whole length and split, the wall is pressed together circumferentially on the pin being driven in, that is adapts itself perfectly to the cylindrical bore in the parts A and B and thereby ensures a secure and lasting connection.

1. A taper pin for locally fixing two machine parts provided with cylindrical bores, comprising atapered tube provided with a longitudinal slot merging towards the thin end of the like into a groove.-

2. A taper pin, comprising a'tapered body having a longitudinal slot merging at the thin end of the pin into a groove so that a solid wall is formed at this thin end.

In testimon whereof I afiix In signature.

f lEINRICI-I BAG MANN.

cylindrical bore 0 is necessary, into which 

